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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-927) Support derived tables in joins
Date Sat, 12 Apr 2014 00:40:17 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13967299#comment-13967299
] 

ASF GitHub Bot commented on PHOENIX-927:
----------------------------------------

Github user maryannxue commented on a diff in the pull request:

    https://github.com/apache/incubator-phoenix/pull/28#discussion_r11557047
  
    --- Diff: phoenix-core/src/it/java/org/apache/phoenix/end2end/HashJoinIT.java ---
    @@ -2529,6 +2724,300 @@ public void testSubJoin() throws Exception {
                 conn.close();
             }
         }
    +    
    +    @Test
    +    public void testJoinWithSubquery() throws Exception {
    +        String query1 = "SELECT item.\"item_id\", item.name, supp.sid, supp.name FROM
" + JOIN_ITEM_TABLE_FULL_NAME + " item INNER JOIN (SELECT \"supplier_id\" sid, name FROM "
+ JOIN_SUPPLIER_TABLE_FULL_NAME + " WHERE name BETWEEN 'S1' AND 'S5') AS supp ON item.\"supplier_id\"
= supp.sid";
    +        String query2 = "SELECT item.\"item_id\", item.name, supp.\"supplier_id\", supp.name
FROM " + JOIN_ITEM_TABLE_FULL_NAME + " item INNER JOIN (SELECT \"supplier_id\", name FROM
" + JOIN_SUPPLIER_TABLE_FULL_NAME + ") AS supp ON item.\"supplier_id\" = supp.\"supplier_id\"
AND (supp.name = 'S1' OR supp.name = 'S5')";
    --- End diff --
    
    This simple nested query case is not supported yet, for non-join queries going into compileSingleQuery()
logic. Will do this in next check-in.


> Support derived tables in joins
> -------------------------------
>
>                 Key: PHOENIX-927
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-927
>             Project: Phoenix
>          Issue Type: Sub-task
>            Reporter: Maryann Xue
>            Assignee: Maryann Xue
>              Labels: enhancement
>             Fix For: 3.0.0, 4.0.0, 5.0.0
>
>   Original Estimate: 240h
>  Remaining Estimate: 240h
>
> Support grammar like:
> SELECT a.col1, b.col2, c.col3 FROM 
> (SELECT rk, col1 FROM table1 WHERE col1 LIKE 'foo%' AND col300 IS NULL) AS a 
> JOIN (SELECT rk, col2 FROM table2 WHERE col2 LIKE 'bar%') AS b ON a.rk=b.rk 
> JOIN (SELECT rk, col3 FROM table3 ) AS c ON a.rk=c.rk;



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